Some pointer devices have xinput ... Device Accel Profile, some don't. How is it detected if a device has that? Is it device specific? Are there specific drivers per mouse model? This trackball doesn't have the profiles:

Ok, this is about creating a hardware database with the physical resolutions of the mice, in order to adapt to different nice. But is this systemd specific? It's all about systemd. My MX Revolution is already set there.
In my dev-libs/libinput-1.12.1 there is no database like this._________________ppc:PowerBook5,8 15"(1440)-G4/1.67,2G|amd64:HP EliteBook 8560w,i7-2620M,16G|Acer Z5610 (Core2QuadQ8200),8G|amd64-prefix:OpenSuse|HP EliteDesk 800G1 i7-4790|HP Compaq Pro 6300 i7-3770
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